A Multiparous Woman Is Admitted to the Postpartum Unit After

A multiparous woman is admitted to the postpartum unit after a rapid labor and birth of a 4000-g infant.Her fundus is boggy,lochia is heavy,and vital signs are unchanged.The nurse has the woman void and massages her fundus,but her fundus remains difficult to find,and the rubra lochia remains heavy.What action should the nurse take next?

A) Continue to massage the fundus.
B) Notify the provider.
C) Recheck vital signs.
D) Insert an indwelling urinary catheter.